crueheadstang87

I have to agree with everyone else and disagree with your friend.

stangman94

haha double meaning

nitrous_bob

actually he is partially right

if it's driven a lot, you may wanna go 327 to eliminate some drivability/streetability issues

Joel5.0

..... like..... ??????

nitrous_bob

Most 347 kits require the piston to be so short that the piston pin intersects the oil rings , causing increased oil consumption, overheating, the 347 is not an ideal street motor due to rapid wear on the rings (from the relatively low rod ratio) and increased oil burning


327/331 is just better....... but if you have a race car that doesn't see much street time.... go 355 and take it to the limit

nitrous_bob

my buddy specifically went 327 for those reasons and what else i don't recall....another said if he did it again...he would NOT go 347

learn from others....i wish the internet was around when i started modding my '90....back in '90

silver91gt

if I were to do it again, I too wouldnt go with a 347.
windsor all the way!!! 427 stroker would be easier to get more power.

Joel5.0

The only reason why a 347 will not last..... is if it's not built correctly.... as any other engine. The rod ratio myth is an excuse for poor engine buildup........ aside a 347, I have also owned other setups with similar, or worse, rod ratios...... that have lasted 250k+ miles of literal abuse w/out any problems....... not to mention the ones I work on regularly..... that include Subaru's that have the "infamous" piston pin intersecting the oil rings stock........ quality machine work, check those clearances, build it right..... and it will last the same mileage another engine will...... or is a "rod ratio problem" exclusive to a 347 setup

Milton

im gonna have to agree with everyone here, its not too big its actually quite common. isnt it .030 or .040 over? maybe his friend ment you just cant drop the stoker kit in with out some machining cause technically it is too big of pistons "stock" block. if thats the case its a bad choice of words cause its still the same block

woodsy

First off, the probe piston used in the 347 is the same piston used in the 331 [:-] Chevys have had the piston pin in the oil ring since jesus roamed the earth [:-] Overheating, thats funny! Rod ratio is useless, take a gander at a 454 chevy rod ratio or better yet a 400 chevy rod ratio [:-] Of the 37 current engines we are buidling in my shop 32 are 347's. I am going to have a **** pile of smokers on the road, stay to the right as they pass you by